James Willis, M.D.
NPI 1538153127 · Pain Medicine (Anesthesiology) Physician · Auburn, CA
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Willis, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Auburn, CA (NPI 1538153127).
Provider details
- NPI number
- 1538153127
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G37443 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-09
- Last updated
- 2014-05-14
Frequently asked questions
- What is James Willis's NPI number?
- James Willis's National Provider Identifier (NPI) is 1538153127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Willis's specialty?
- James Willis is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is James Willis located?
- James Willis's practice location on file with NPPES is 11971 Heritage Oak Pl, Auburn, CA 95603-2461.
- What is James Willis's phone number?
- The practice phone number listed in the NPPES registry for James Willis is (530) 745-9615.
- Does James Willis accept Medicare?
- James Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Willis's NPI active?
- Yes — James Willis's NPI (1538153127) is active in the NPPES registry as of the last update on 2014-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.